Bridge-warning indicator.



H. R. CAMPBELL.

BRIDGE WARNING INDICATOR.

APPLICATION FILED FEBJ?, 1913.

1,098,781 Patented June 2, 1914.v

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UNTTED STATES PATENT OFFTCE.

HERBERT R. CAMPBELL, OF PATERSON, NEW JERSEY.

BRIDGE-WARNING INDICATOR.

insertar.. t

To all whom it may concern:

Be it known that I, Hnnnnnr R. CAMP- ;enLL, a citizen of the United States, residing at Paterson, in the county of Passaic and State of New Jersey, have invented certain new and useful Improvements in Bridge lllarning Indicators, of which the following is a specification.

This invention consists in certain improvements in bridge-warning indicators and the like whereby is produced an indicator which, while simple, strong` and durable in construction, is capable of being` readily installed and kept in working order without subjecting the workmen to danger from passing trains and which is so constructed that should its telltale-carrying arm become partially or wholly detached from the pole said arm must fall to a position where it is entirely clear of the traflic.

ln the accompanying drawing, Figure 1 is a view showing the improved bridgewarning indicator in front elevation; Fig. 2 is a view on a somewhat larger scale showing the main parts of the device principally in front elevation, but partly in section; Fig. 3 is a vertical sectional view of the head of the pole or upright; and, Fig. 4 is a vertical sectional view in a plane at right angles to that of Fig. 3 and taken just to the right of the pivot for the arm as seen in Figs. 1 and 2.

The upright a is preferably a pole of the well-known hollow telescoped construction. lnto the upper end of this pole is removably7 iitted the stem 5 of a head c which may be kept from turning therein by the removable pin @Z or otherwise. The pole may be set in a bed of concrete e or the like beside the roadbed f shown in Fig. 1, and the construe tion of the head c is preferably such that it overhangs at the side of the pole which is next to the roadbed, as at c. The head c includes two spaced walls or cheeks g, thus giving it a bifurcated form, the slot or space abetween its walls gbeing open not only upwardly and laterally in opposite directions but, in respect to the part c of the head, downwardly. Through the walls g g and in the part c of the head is passed a horizontal bolt z' having a retaining nut y'.

The arm 7@ is a strip of angle iron which. is straight for the greater part of its length and has its remaining portion bent to an angle of about 5 in such manner that the wall 7c of the strip remains in the same Specification of Letters Patent.

Application led *February 17, 1913.

Patented aan@ a, 1914.

Serial No. 748,839.

plane as before the bending was effected. By forming the arm of angle iron, relatively light mate-rial may be used and to reinforce the arm at the bend therein I rivet to the wall la thereof a gusset Z formed to fit the angle of the wall le of the arm, such gusset also aifording an increased bearing surface for the pivotal movement of the arm, as will appear.

The arm la, whose wall 7c is fitted into the slot 71, of the head c and is penetrated by and thus has a bearing on the bolt c', is adapted to bear in the normal position with its wall le in contact with the substantially horizontal seat m forming the top surface of the head c, in which position the bend in the arm will be approximately coincident with the relatively outer extremity of said seat m. The arm is held in its normal posi tion by a tie or tie-bar n havingI one end pivotally connected with the outer extremity of the arm and its other end secured to the pole a by a screw 0. Upon removing the screw, the arm will be free to swing on the* bolt i to the dotted line position shown in Fig; 1; that is, into closely folded relation to the pole, which movement may be allowed by cutting away or rounding the head c at the point 79.

Removably secured in the angle between the walls 7c and 79 of the arm and at the free end of its major portion is a strip g, preferably of wood. lts securing means may be screws or the like a. From screweyes s set in this strip depends the telltales 25.

As will be clear, by my construction, once the pole is in place, all operations attendant upon the installation or repair of the improved bridge-warning indicator can be effected without the workmen encroaching on the roadway. Further, should the arm be free for any reason to leave the normal or substantially horizontal position, it must fall to a position where it is not merely in partially folded (where it would interfere with traffic) but in fully folded relation to the pole.

By forming the telltale-carrying member g separate from the arm, that part of the de-I vice which immediately includes the telltales may be bodily removed for repairs.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is 1. In combination, an upright having a bifurcated head formed as a substantially horizontal seat, a tell-tale carrying arm having an angular cross-section substantially from end to end thereof and including a lon gitudinal horizontal wall-portion and a longitudinal vertical wall-portion depending from said horizontal wall-portion and having its vertical wall-portion received in said head and pivoted therein on a horizontal axis and its horizontal wall-portion resting on said seat, said arm being gravity actuated to move normally into substantially folded relation to the upright7 and means, connecting the arm and the upright, for holding the arm in the horizontal position7 substantially as described.

2. In combination, an upright having a head formed as a substantially horizontal seat and provided with an upwardly open vertical slot, a bearing device extending horizontally through said head and traversing its slot, a tell-tale carrying arm having an angular cross-section substantially from end to end thereof and including a longitudinal horizontal wall-portion and a longitudinal vertical wall-portion depending from said horizontal wall-portion and having its vertical wall-portion snugly received in the slot of said head and penetrated by and fulcrumed on the bearing device and its hori- V zontal wall-portion resting on said seat, said arm being gravity-actuated to move normally into substantially folded relation to the upright, and means, connecting the arm and the upright, for holding the arm in the horizontal position, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

HERBERT R. CAMPBELL.

Vitnesses JOHN L. SEWARD, WVM. D. BELL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

